High-pressure mixing nozzle



, L. L. TIRRELL HIGH PRESSURE MIXING NOZZLE Feb. 13, 1945.

Filed July 5, 1941 INVENTOR. 5oz/E 77E/@'14 ment.

e Patented Feb. 13, 1945 l HIGH-PRESSURE MIXING NozzLE Leslie L. Tirrell, Benton Harbor,`Mich. appiicati July 3, 1941, seria1N0.49o,s9s

` e claims. (c1. 299-129) This inventionV relates to a high pressure mixing` nozzle, and more particularly to a nozzle `or this character adapted for fire iightingandlike purposes.

, The primary object of the invention Ais to provide anozzle having novel means for Controlling vthe form or pattern and condition oi liquid ejected` therefrom at high pressure, as between a compact stream of` substantially `solid cylin drical cross section `and ,long trajectory and a `substantially at sheet orspray or liquidflaring to a substantial width.

A further 'object is to provide a nozzle having a body, a collar unit rotatably encircling the body, and including an enlarged discharge portionprojecting beyond the body, a tubular member threaded in said unit and mounting a `barile tiltable insaid discharge portion on an axis transverse of the nozzle, wherein a portion of sald baille engages said collar unit to be tilted thereby upon relative longitudinal movement of said collar and tubular member` incident to rotation e `of said collar unit on said body, for the purpose of controlling thepatternand condition of liquid ejected `through said discharge portion.

Other objects will be apparent from the description, drawing, and appendedclaims.

In the drawing:

Fig. 1 is a longitudinal sectional vieu7 of the jdevice taken on line l``l of Fig. 3, with parts shown in elevation.

Fig. 2 is a fragmentary` detail sectional View corresponding to Fig. l, but illustrating thedis- `charge baille in a different adjustment.

Fig. 3 is an enlarged end View of the nozzle withlthe baille positioned as illustrated in Fig. l..

` Fig. 4 is `an enlarged end View ofthe nozzle with the'baile positioned as illustrated in 2.

Fig. 5` is a side elevation vof the barile mounting element of the nozzle.

Fig. 6 is a top view of the baiiie mounting elei ment. l i

Fig. 7 is a longitudinalsectional View taken on line 1-1 of Fig. 6. l

Fig. 8 is a perspective View` ofthe baille elen Fig. 9 is a side elevation of the baille element. Fig. 10 is a top plan viewof the barile element.

Fig. 11 is` anenlarged transverse sectional View taken online I-Iof Figyl. e

Fig. `12 is an enlarged transverse sectional view taken on line |2--I2 ofFig. 1. If

Referring to the drawing, which illustrates a preferred embodimentof the invention, the nul meral 2|)` designates a valve controlled byhandle 21 and connected to a liquid une arzt. Tubular part 23 connected to the valve formsa handle. l

An elongated tube 24 projects fromtubularpart 23 and has a threaded enlargement 25 and a `valve 2E formedthereon in spaced relation 'in-` termediate its ends.. The end portion 21 oftube 24 is of reduced outer diametergbutlthe bore 28 of said tube is uniform throughout. i

An externally and internally threaded tubular `member 29 is threaded on enlargement 25 of tube 24. `Member 29 has a ilange 3U andan annular guide 32at its outer end and a reduced thickness inner end portion' 3|. Member 29 is threaded at 33 inthe body 34 of `a tting having a branch 35 intermediate thereof. Branch 35 has a bore` 36 smaller than the bore of body 34, and its outer end 31 is enlarged and screwV threaded at Blier connection with a `high pressure line, Rearwardly of branch'35, thettin'g 34 receives a .gasket 84 betweenmetal rings 83 `and 85. `Sleeve 29 presses `these `parts against shoulder 82 and radially compresses the gasket to form a seal.

`A jet 39 is threaded inthe outer end of branch fitting 34 with its innertubular end portion 9D terminating forwardly of branch bore 36 and its bore 44 receiving tube 24with substantial clearance. A spacer sleeve 43 having outer longitudinal ribs 44 centers tube 24 in bore 42. The forward end of jet' 39 has a reduced Venturi bore 46 receiving tubeportion 21 with clearance, and

` is tapered externally at 45.

A A second jet 41 is screw threaded on jet 39 at 48. Jet 41 has a large diameter bore portion 49 receiving jet "end 45, a tapering intermediate bore portion 5U, and an elongated reduced Venturi bore 5l. The front of jet `41 is tapered externally at 52. f

y A cylindrical member `53 isscrew threaded bore portion 54 to the `front of jet 41. Circumferentially spacedopenings 55 lare formed in member 53 at bore 54. The intermediate portion 56 ofthe bore of' member 53 tapers forwardly. andthe boreterminates in a reduced substantiallycylindrical portion 51. Member 53 termi` nates in areduced diameter portion 9|).

A cylindrical socket member 5B is ii'xedly.

mounted `on end portion er the cylindrical member 53. Socket member 52 is ofthe construction best illustrated 'in Figs. l5,` and I6 and 7. and has a fast external screw thread 59 at its inner end portion. Socket 58 has a large cylindrical bore 69 at its inner end rotatably receiving the front portion ofmember `53. The` intermediate portion 6l of the bore of socket, 58 has a drive t on or is otherwise xed on the reduced end portion 90 of member 53. The bore' portion 6I of member 58 communicates with flaring mouth opening 62. Member 58 has a longitudinal radial slot 83 formed in the forward end thereof and terminating intermediate its ends. A pair of aligned transverse slots or grooves 64, having enlarged inner end portions 65 are formed in the portions of member 58 on opposite sides of and adjacent the inner end of longitudinal slot E3. Cylindrical inner grooveportions 55 are positioned withtheir common axis substantially spaced from the axis of the member 58, as best illustrated in Figs. and 7.

An elongated sleeve 66 loosely encircles the cylindrical member 53 and the iront end of jet 41 and preferably has an inner diameter slightly greater than the outer diameters of member 53 and jet 41. Sleeve 66 is of a length to lform an elongated handl grip, and its external surface is preferably knurled. Sleeve 66 extends rear- Wardly beyond the openings 55 in member 53, and has aplurality of circumferentially spaced elongated openings 61 therein adapted to register With said openings 55. The `vclearance between sleeve 66 and member 53 accommodates passage of air to openings 55' if sleeve openings 61 do not register therewith.

`matewith the threadsL 59 upon the socket member 58. The rforward end of collar 68 is enlarged at 69, and: the front transverse face of member 68 is recessed at 10.

A nozzle mouth element 1 I, having a rear tubular internally screw threaded portion 12, is threadedlupon the enlarged forward portion 69 of the collar 68. Mouth element 1| has an intermediate thickenedportion 13 providing a reduced diameter bore in which the cylindrical front portion of socket 58 is adapted to having a sliding and. relatively rotatable fit. The rear end of thickened portion 13 is preferably cut away or tapered at 14, for purposes to be hereinafter set forth. yThe forward end of the mouth element has a conical mouth opening 15 flaring outwardly from the forward end of the cylindrical bore in the intermediate portion of the element. The taper of the opening 15 is preferably complementary to the taper of the forward flaring mouth 62 of the boreof socket member 58, whereby., when the parts are arranged as illustrated in Fig. 1,'the conical mouths form continuations of eachother and provide an elongated conical mouth opening which serves to form an eddy chamber to prevent dripping of liquid therefrom. y A baffle member 16, best illustrated in Figs. 8, 9, and l0, is adapted to be carried by the socket member 58. Member 16 comprises a body portion 11 of transverse concave-convex form and tapered from one end to another, whereby its shape is -similar to one portion of a Vhollow cone divided along a planelcoincidingl withand parallel to its,

portions 65 of said socket. The semi-conical body .portion 11 of the: baffle projects forwardly from collar 22 on the valve 20 is connected with a' line from a source of one liquid under comparatively low pressure, and a line from a sourcel of a second liquid under much higher pressure,

is connected at threaded portion 38 of. the branch fitting. The two liquids.V pass through the mixing chamber 49 and tapered chamber 5D at high vevflocity, and are effectively, quickly and completely "respectively, and hence the proportion in Which thetwo liquids are mixed remains substantially constant'for any given adjustment or setting of the nozzle.

K The proportion in which the two liquids are to be mixed may be varied by adjusting theposi.- tion of valve 2| relative to the end of tubular portion 4D of jet member 39.

Air is drawn into the bore of the outer' cylin-l drical member 53 through openings 55 and 51, in member 53 and sleeve 66, respectively, at a point adjacent the mouth of jet 52. v

Assuming that the nozzle is set inthe position" illustrated in Fig. 1, when liquid mixture is discharged from the bore of member 53, it passes through the cylindrical bore 81 of socket 58 and strikes the convex tapered face of the baffle member 11. The shape of the balllemember, together with the shape of the tapered mouth openings 82 and 15 of the socket 58 and mouthv element 1 I,

respectively, produces a discharge of the liquid in a substantially flat sheet form diverging from the mouth of the nozzle. By introducing a pressure of around 600# at branch35, I have found that the flat sheet of liquid discharged byv the nozzleat this nozzle setting will have a Width of approximately 10 feet at a distance of from l0 to 15 feet from the nozzle. This setting' of the nozzle is important when lighting smoldering fires covering large areas, such as res in scrap and rubbish piles, and deep fires in coal piles caused by instantaneous combustion.

Assuming that the nozzle is to be used on a fire which is in open flame and from which a much higher degree of heat is generated, it is necessary to adjust the nozzle to a position as shown in Fig. 2. 'I'his is done by simply rotating the sleeve 86 relative to the member 53 which it encircles, thereby longitudinally and forwardly moving the sleeve and its associated parts relative to socket 58 by virtue of the threaded. connection of said socket with said collar 58. This longitudinal movement of sleeve collar 68 and mouth'1l shifts the upper endv of tongue 19'ex'tending in the recess 19, thus effectingtilting. of Vthebafile to the position illustrated in Fig. 2. Note that the tilting of tongue. 19 is accommodated bythe taperv 14 of the mouth element. In its Fig-. 2 position,v.tlie

baille 16 is entirely clear of a longitudinal projection of the cylindrical bore 6| of the socket member 58, whereby a solid streammaybe projected from the mouth of the nozzle` without interference from the baiile member.v Sucha solid stream of Water may be: projected for distances of feet or more underv the pressure aforementioned. y

It will be obvious that the nozzlemay be.y adjusted toy any; position between the. positions illustrated in Figs. 1 and2. to vmeetespeciiic conditions intermediate the two extremes above described.

I claim: l l l. A high pressure nozzle comprising an elongated body havinga liquid passage therethrough, a baille pivotally mountedon one end of said body about an axis transverse o-f and laterally off-set fle and fitting in` said groove lfor tilting said baf-` ile upon rotation of said sleeve relative to said body, said baille havinga gliquid-diverting surface corresponding in shape `divided cone. 2. A `high pressure nozzle comprising a body to that of a longitudinally havinga liquid passage therethrough and a 1ongitudinal slot at oneend portion thereof, a baille pivoted on said body aboutv an axis transverse thereof and projecting outwardly therefrom, a

shlftable in said slot, and a sleeve unit rotatably V Atongue projecting laterally from said baffle` and unit rotatably encircling the end portion of said body and projecting therefrom, said sleeve unit havinga screw threaded connection with the end of saidbody and having an annular internalgroove therein, `said unit terminating in an en` .llarged discharged portion `having an outwardly llaring mouth opening, a baille tiltablyfcarried by said body and `projecting into saidllaring `dis-` charge/opening, and a laterally projecting tongue carried by said baille and seating in `said groove, said baille being of substantially semi-conical form and being positionedwith its tilting axis. transverse of and spacedfrom the axis of said l passage and with its convex surface facing th axisof said passage.` ,g

\ 5. A high pressure nozzle comprising a body having aliquid passage therethrough,` a sleeve rotatably encircling one end portion of said body and projecting therebeyond, said sleeve having an internal circumferential groove andthe outer end of said sleeve having a flaring mouth open L ing, an annular socket member carried `bythe end of said body within said sleeve and having a screw threaded connection with said sleeve,` a baille `transversely pivoted to said socket laterally olfset from said passage and including a lateral projection seating in said groove,` rotation of said encircling the end of `said body and having a threaded engagement with said body,.said sleeve unit having an annular internal recess `receiving the end of said tongue and terminating in a pro- `jecting discharge portion receiving said baille.

3. A high pressure nozzle comprising a body having a liquid passage therethrough, a sleeve unit rotatably encircling the end portion of said l body and projecting therefrom, said sleeve unit having a threaded connection with the end of said body and having an annular internal groove therein, said unit terminating in `an enlarged disy charge portion having an outwardlyiiaringmouth opening, a baille tiltably carried by said body and projecting into said flaring discharge opening, and a laterally projecting tongue carried by said baille and seating in said groove. y

4. A high pressure nozzle comprising a body having a liquid passage therethrough, a sleeve sleeve longitudinally shifting said sleeve to tilt said baille. 6. A high pressure liquid nozzle comprising a body having a passage for liquid under high pressure, a sleeve threaded on said body andhaving l an enlarged flaring mouth projecting beyond said body, said bodyfand sleeve comprising apair of relatively longitudinally shiftable parts, and a baille pivoted to one of said parts transversely of and offfset laterally ofsaid passage, said baille `having a laterally projecting portion seating in. l

a circumferential groove in the other part, and comprising a tapering body of substantially semiconical form, said baille being tiltable in said mouth between a position angularly disposed across the mouth of said passage and a position laterally off-set from Said passage.

` LESLIE L. TIRRELL. 

